Evidence row 1541174

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://customcat.usefulapi.io/mcp"
    ],
    [
      "web",
      "https://usefulapi.io/customcat/"
    ]
  ],
  "name": "CustomCat MCP by usefulapi",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-31T21:44:45.833867Z",
        "status": "active",
        "statusChangedAt": "2026-10-31T21:44:45.833867Z",
        "updatedAt": "2026-10-31T21:44:45.833867Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Browse the CustomCat catalog, your products and designs; check shipping; create and cancel orders.",
      "icons": [
        {
          "mimeType": "image/svg+xml",
          "sizes": [
            "any"
          ],
          "src": "https://usefulapi.io/icon.svg"
        },
        {
          "mimeType": "image/png",
          "sizes": [
            "256x256"
          ],
          "src": "https://usefulapi.io/icon-256.png"
        },
        {
          "mimeType": "image/png",
          "sizes": [
            "512x512"
          ],
          "src": "https://usefulapi.io/icon-512.png"
        }
      ],
      "name": "io.usefulapi/customcat",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://customcat.usefulapi.io/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "servers/customcat",
        "url": "https://github.com/m190/usefulapi-mcp"
      },
      "title": "CustomCat MCP by usefulapi",
      "version": "1.13.0",
      "websiteUrl": "https://usefulapi.io/customcat/"
    }
  },
  "source": "mcp_registry",
  "summary": "Browse the CustomCat catalog, your products and designs; check shipping; create and cancel orders."
}

What the leaf hashes

{"body":"52a6e1f0c21afbff15e1219dc781db307c4051cfd1fa1682213d59d833b885c6","id":1541174,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793485021943842,"prev":1537762,"subject":"mcp_registry:io.usefulapi/customcat","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-31 (246033 rows).

1. 0x0d6e16068ce9bcc6c229184049b6275a984c493064be55f77609696c21e82729
2. 0xca537ff8d9a6ff037cd45e7bae54e1e602fd7f05019a305a1277bb7a9d08013d
3. 0xa21a9192ff0496bdaede8b637cc4223aff7f49cb084109fff58068a29a9a9b51
4. 0xe74b8f0ec5f974cd91e8e198c7d2442c7843f1f3235511098ccc07463c7ab0b4
5. 0xd0db8806dbb0dffcc220e9825a7b714f75e420e87f5e29acd3b463573dd5030f
6. 0x46e9af431eaf782cf3834cb685d4cf19f1414bb5bd19b96f6011317766a21988
7. 0xf2112618fe9d75240f53ddc0c5440b8448bcb2b07b46a620187a97b45a1bb77a
8. 0x2a4bb1b586b311f84defe202bc5fe93960b45cf4b8a77e686d69fd7d062fd13a
9. 0x64e7a1acd22634a56bd76498b308b82f6b0268c34514953634a2617bacee9376
10. 0x4e14b341de8b250693d4baab2aa1ad43b2e7e8d4b662e51a88c93408076f4397
11. 0x31d1d378cbc64bd88678842e5f19d164300931f7c17d93f422970788447dd15f
12. 0xa115d2aa4bb5cf8cb7b5b8814b35ba5ccc89943ee285b442443e4a06f973efa5
13. 0xcb2cb28a33039aae566babd0a0b4f4ee907393fb561a2e3c876f0270ee9a2350
14. 0x5f01ce2f7be13617b127cba8dfc54bc12d54dc74dbe1632c8104af22668fd4f3
15. 0x72fbe549c493739bb99e38209648de550f136f904e61b4f7609a937c2630a055
16. 0x2bca4aa3c59fe9209016c64bd8b706423477e3407201a00165afde9abf6fee2b
17. 0x37f13582abb3c002d51c2f190c312129cbc3a39754618fee2c75c2441bb1eb94
18. 0x59f83f7228f07febe2780660e422e171b0359b8aa031ee3be07e991118130c15

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0